Daily Quality Measurements - Siemens SOMATOM Spirit Operator's Manual

CHAPTER
F.2
Storage
04/2012
Daily Quality
F . 1
Measurements
The daily quality measurements only require checking of three
parameters on the water phantom:
The Pixel noise of images is calculated as a standard devia-
❏
tion.
Tube voltages are measured directly on the x-ray tube.
❏
These measurements are carried out for all available kV values.
i
The CT value of water can be measured in Constancy
F . 2
Test\Homogeneity Test.
geneity test)
The images of the Quality/Daily measurements are stored as
F . 2
images of the "Quality Assurance Patient". New images over-
write older images.
i
All values of the Quality/Daily measurements are stored in the
F . 2
(→ Page F.3-35 Output of results)
Report Files.
(→ Page F.3-20 Performing the homo-
F . 2
F . 2
F . 2
F . 2
F . 2
0 . 0
F.2-1
0 . 0
0 . 0